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Cod sursa(job #363009)
#include<fstream.h>
ifstream f("scmax.in");
ofstream g("subsir.out");
int v[100001],p[100001],l[100001],a[100001],i,poz,n,k;
int cauta(int x){
int p,u,m;
p=0;u=k;
while(p<=u){
m=(p+u)/2;
if(x>v[l[m]]&&x<v[l[m+1]]) return m;
else if(x<v[l[m]])
u=m-1;
else p=m+1;
}
return k;
}
void rec(int k){
if(k>0){
rec(p[k]);
g<<v[k]<<' ';
}
}
int main(){
f>>n;
for(i=1;i<=n;i++)
f>>v[i];
l[1]=1;k=1;
int max=0;int o=0;
for(i=2;i<=n;i++){
poz=cauta(v[i]);
p[i]=l[poz];
a[i]=poz+1;
if(a[i]>max){
max=a[i];
o=i;
}
l[poz+1]=i;
if(poz+1>k)
k=poz+1;
}
g<<max<<'\n';
rec(o);
}